This article shows how to start a simple server with Pyramid.
Requirements
First, you need the following programs available on your system:
- python3
- pip
- venv
It all should be provided with a python package in your operating system.
Starting virtual environment
To avoid polluting the global scope with package versions, we can start & use the virtual environment:
$ python3 -m venv .venv
When successful, this command creates .venv folder & produces no output.
To switch to the virtual env:
$ source .venv/bin/activate
(.venv) $
The current console will use .venv as the location for packages managed by pip.
Installing the dependency
(.venv) $ pip install pyramid
Collecting pyramid
Downloading pyramid-2.0-py3-none-any.whl (246 kB)
|████████████████████████████████| 246 kB 2.4 MB/s
Collecting hupper>=1.5
Using cached hupper-1.10.3-py2.py3-none-any.whl (26 kB)
Requirement already satisfied: setuptools in ./.venv/lib/python3.8/site-packages (from pyramid) (44.0.0)
Collecting webob>=1.8.3
Using cached WebOb-1.8.7-py2.py3-none-any.whl (114 kB)
Collecting zope.interface>=3.8.0
Using cached zope.interface-5.4.0-cp38-cp38-manylinux2010_x86_64.whl (259 kB)
Collecting plaster-pastedeploy
Using cached plaster_pastedeploy-0.7-py2.py3-none-any.whl (7.8 kB)
Collecting translationstring>=0.4
Using cached translationstring-1.4-py2.py3-none-any.whl (15 kB)
Collecting venusian>=1.0
Using cached venusian-3.0.0-py3-none-any.whl (13 kB)
Collecting plaster
Using cached plaster-1.0-py2.py3-none-any.whl (14 kB)
Collecting zope.deprecation>=3.5.0
Using cached zope.deprecation-4.4.0-py2.py3-none-any.whl (10 kB)
Collecting PasteDeploy>=2.0
Using cached PasteDeploy-2.1.1-py2.py3-none-any.whl (17 kB)
Installing collected packages: hupper, webob, zope.interface, PasteDeploy, plaster, plaster-pastedeploy, translationstring, venusian, zope.deprecation, pyramid
Successfully installed PasteDeploy-2.1.1 hupper-1.10.3 plaster-1.0 plaster-pastedeploy-0.7 pyramid-2.0 translationstring-1.4 venusian-3.0.0 webob-1.8.7 zope.deprecation-4.4.0 zope.int
erface-5.4.0
Code
I use a slightly modified example from the documentation. server.py:
from wsgiref.simple_server import make_server
from pyramid.config import Configurator
from pyramid.response import Response
def hello_world(request):
return Response('Hello World!')
if __name__ == '__main__':
HOST = '0.0.0.0'
PORT = 6543
with Configurator() as config:
config.add_route('hello', '/')
config.add_view(hello_world, route_name='hello')
app = config.make_wsgi_app()
server = make_server(HOST, PORT, app)
print(f'Starting server at {HOST}:{PORT}')
server.serve_forever()
I moved HOST & PORT into variables and logged them to the console. Otherwise, the server was quietly working without notifying the user about its presence.
Running server
(.venv) $ python3 server.py
Starting server at 0.0.0.0:6543
The server works as expected:
Links
Summary
We have seen how to start a simple Pyramid server.
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